Shadow and Sundial Experiment Worksheet

Science experiments lesson 27: Shadows and a sundial · Set 180 · 40 questions

What you do (Shadows point away from the Sun): 1. Stand the stick upright in the ground in an open sunny place. 2. Every hour, mark the tip of the shadow with chalk and write the time. 3. Measure the length of each shadow. 4. Wear a cap and never look straight at the Sun.

1. 1.🧺 Do we need a straight stick for the shadow clock? (a) needed (b) not needed
2. 2.🔦 Is butter paper opaque, translucent or transparent? (a) opaque (b) transparent (c) translucent
3. 3.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a mirror (b) a sunny open place (c) a clock to check (d) a straight stick
4. 4.🛟 While watching shadows outdoors, what must you never do? (a) mark with chalk (b) sit in the shade (c) look straight at the Sun (d) wear a cap
5. 5.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) shadow length (b) the same spot (c) the time of day
6. 6.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the stick kept upright”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.🔮 Predict: the Sun is low in the evening sky. The stick’s shadow is ___. (a) missing (b) short (c) round (d) long
8. 8.🔍 Which is the odd one out? (a) tissue paper (b) clear plastic film (c) frosted glass (d) butter paper
9. 9.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is what we measure? (a) the same spot (b) the stick kept upright (c) shadow length (d) the same stick
10. 10.🔍 Which is the odd one out? (a) clear glass (b) clear plastic film (c) a brick (d) clean water
11. 11.🔍 Which is the odd one out? (a) oily paper (b) a wooden board (c) butter paper (d) tissue paper
12. 12.🧺 Which of these is not needed for the shadow clock? (a) chalk to mark shadows (b) a clock to check (c) a straight stick (d) a balloon
13. 13.🧺 Do we need yeast for the shadow clock? (a) not needed (b) needed
14. 14.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is the one thing we change? (a) shadow length (b) the same stick (c) the time of day (d) the same spot
15. 15.🌞 When is a stick’s shadow the shortest? (a) early morning (b) at night (c) around noon (d) late evening
16. 16.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a magnet (b) a clock to check (c) a straight stick (d) a sunny open place
17. 17.⚖️ Fair test — how does the shadow of a stick change through the day? Which of these is kept the same? (a) the same stick (b) shadow length (c) the time of day
18. 18.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same stick is kept the same. (a) False (b) True
19. 19.🛟 What should you wear for a long time in the hot sun? (a) a raincoat (b) nothing on your head (c) a woollen sweater (d) a cap or hat
20. 20.🔦 Which of these is transparent? (a) frosted glass (b) clear glass (c) oily paper (d) a steel plate
21. 21.True or false: clear glass is transparent. (a) False (b) True
22. 22.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: shadow length is what we measure. (a) True (b) False
23. 23.🌅 In the morning the Sun is in the east. Which way does a shadow point? (a) north (b) east (c) up (d) west
24. 24.True or false: clean water is transparent. (a) False (b) True
25. 25.🔦 Is a brick opaque, translucent or transparent? (a) translucent (b) transparent (c) opaque
26. 26.🧺 Do we need a balloon for the shadow clock? (a) not needed (b) needed
27. 27.🌍 Why does the stick’s shadow move during the day? (a) the stick walks (b) Earth keeps spinning (c) the stick grows (d) the ground slides
28. 28.🔮 Predict: you move a torch closer to your hand. The shadow on the wall gets ___. (a) brighter (b) smaller (c) coloured (d) bigger
29. 29.🔮 Predict: on a fully cloudy day, the sundial ___. (a) does not work well (b) runs faster (c) works better (d) shows two times
30. 30.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same stick”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.🧺 Three of these are needed for the shadow clock. Which one is NOT needed? (a) a straight stick (b) yeast (c) chalk to mark shadows (d) a sunny open place
32. 32.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the time of day”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.⚖️ Fair test — how does the shadow of a stick change through the day? What do we do with “the same spot”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the time of day is the one thing we change. (a) True (b) False
35. 35.🧺 Do we need a sunny open place for the shadow clock? (a) not needed (b) needed
36. 36.True or false: turmeric powder is not needed for the shadow clock. (a) False (b) True
37. 37.True or false: chalk to mark shadows is needed for the shadow clock. (a) False (b) True
38. 38.⚖️ Fair test — how does the shadow of a stick change through the day? True or false: the same spot is the one thing we change. (a) True (b) False
39. 39.🔦 Which of these is translucent? (a) oily paper (b) air (c) clean water (d) clear glass
40. 40.🔦 Is clear glass opaque, translucent or transparent? (a) translucent (b) opaque (c) transparent

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